1.Asking someone if they have milk from any kind of animal, traditionally cow or rat milk.
2.Asking for drugs known as 'Milk'.
3.Your friend is called Milk and your negotiating his release from a foreign terrorist.

1.I hear you Got Milk?, can i have some?
2.Got Milk? so i can get stoned and anally abuse things whilst giggling like a cheap whore.
3.Both of the above

The Urban Dictionary T-Shirt

Got Milk? is an American advertising campaign encouraging the consumption of cow's milk, created for the California Milk Processor Board in 1993. The voice saying "Got Milk?" at the end of each television ad is that of veteran voiceover actor Denny Delk.

In 1998, the slogan “got milk?” campaign expanded to include the faces, but not the names, of celebrities. By adding the celebrity cachet, awareness of drinking milk has increased 90%. Today the slogan is an international icon and the phrase has been parodied more than any other ad slogan.

Doctor: mrs. lipstein l'm afraid l have some bad news. the tumor is malignant. i'm afraid you only have 6 months to live.